Seat frame



FIG. 1 is a front perspective view of a seat frame which illustrates the new design;

FIG. 2 is a side elevation view thereof;

FIG. 3 is a front elevation view thereof;

FIG. 4 is a rear elevation view thereof;

FIG. 5 is a top plan view thereof;

FIG. 6 is a perspective view of a second embodiment of the new design;

FIG. 7 is a side elevation view of the embodiment of FIG. 6;

FIG. 8 is a top plan view of the embodiment of FIG. 6; and,

FIG. 9 is a front elevation view of the embodiment of FIG. 6. 

The ornamental design for a seat frame, as shown and described. 